Directionless and sad.

Hello Reddit,

I guess I'm just venting but if anyone wants to chime in with some specific advice, I welcome it.

I'm a high school teacher, about to start my sixth year of teaching, and I really feel like I need to change my career but I don't know what I want to do. I teach English / humanities courses, and it's what i majored in throughout college, so I never really tried anything else. I worked retail to pay for my school and didn't branch out or really explore during that time, and I feel like I'm really paying for it now. I know what I'm doing doesn't work, but I struggle to even imagine a better future for myself. To make it worse, I've been in a relationship for a year and my partner is basically dependent on me since he can't work in my state due to pending charges (total bullshit that has been delayed despite lack of evidence for over five years). I feel stuck because I don't have a plan and so I feel like the rational thing is to stay in place until I do.

tl;dr: I know that what I'm doing sucks, don't know what I want, and am terrified to take a risk.